private void CustomerSetup()
        {
            pageName.Text = "Entity Editor - Customer Records";
            dataSource    = DBAccessHelper.GetUsers();
            if (dataSource == null)
            {
                dataSource = new DataTable()
                {
                    Columns =
                    {
                        { "error"           },
                        { "no values found" }
                    }
                }
            }
            ;
            resultDg.ItemsSource               = dataSource.AsDataView();
            resultDg.Visibility                = form.Visibility =
                formCustomerData.Visibility    = deleteSelectedRecord.Visibility =
                    makeStaffButton.Visibility = saveFormChanges.Visibility = Visibility.Visible;

            addNewRecord.Visibility = Visibility.Collapsed;
        }